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microevent.js
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microevent.js
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/**
* MicroEvent - to make any js object an event emitter (server or browser)
*
* - pure javascript - server compatible, browser compatible
* - dont rely on the browser doms
* - super simple - you get it immediatly, no mistery, no magic involved
*
* - create a MicroEventDebug with goodies to debug
* - make it safer to use
*/
var MicroEvent = function(){};
MicroEvent.prototype = {
bind : function(event, fct){
this._events = this._events || {};
this._events[event] = this._events[event] || [];
this._events[event].push(fct);
},
unbind : function(event, fct){
this._events = this._events || {};
if( event in this._events === false ) return;
this._events[event].splice(this._events[event].indexOf(fct), 1);
},
trigger : function(event /* , args... */){
this._events = this._events || {};
if( event in this._events === false ) return;
for(var i = 0; i < this._events[event].length; i++){
this._events[event][i].apply(this, Array.prototype.slice.call(arguments, 1));
}
}
};
/**
* mixin will delegate all MicroEvent.js function in the destination object
*
* - require('MicroEvent').mixin(Foobar) will make Foobar able to use MicroEvent
*
* @param {Object} the object which will support MicroEvent
*/
MicroEvent.mixin = function(destObject){
var props = ['bind', 'unbind', 'trigger'];
for(var i = 0; i < props.length; i ++){
if( typeof destObject === 'function' ){
destObject.prototype[props[i]] = MicroEvent.prototype[props[i]];
}else{
destObject[props[i]] = MicroEvent.prototype[props[i]];
}
}
return destObject;
}
// export in common js
if( typeof module !== "undefined" && ('exports' in module)){
module.exports = MicroEvent;
}